FNA tissue effects

Thyroid gland
General
FNA tissue effects

Author: Shahidul Islam, M.D., Ph.D. (see Authors page)

Revised: 14 February 2017, last major update March 2009

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PubMed search: FNA tissue effects

Table of Contents

Definition / general | Microscopic (histologic) images

Cite this page: FNA tissue effects. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/thyroidfnatissueeffects.html. Accessed July 15th, 2017.

Definition / general

Acute changes are hemorrhage, granulation tissue, giant cells, hemosiderin laden macrophages, cholesterol clefts, necrosis, rarely infarction (Diagn Cytopathol 1996;15:211)
Chronic changes are infarction, oncocytes, squamous or spindle metaplasia, fibrosis, calcification, vascular thrombosis (Pathol Res Pract 2007;203:641), rarely tumor implantation along needle tract (Acta Cytol 1990;34:801, Acta Dermatovenerol Alp Panonica Adriat 2006;15:169), rarely papillary endothelial hyperplasia (Arch Pathol Lab Med 1992;116:1040, Arch Pathol Lab Med 1991;115:240)

Microscopic (histologic) images

Images hosted on other servers:

Courtesy of Andrey Bychkov, M.D., Ph.D.

FNA induced alterations in thyroid nodule

Images from AFIP:

Pseudoangio-sarcomatous pattern

Fine needle induced changes
in follicular adenoma